CN103220838B - LED ballast driven circuit - Google Patents
LED ballast driven circuit Download PDFInfo
- Publication number
- CN103220838B CN103220838B CN201310143695.4A CN201310143695A CN103220838B CN 103220838 B CN103220838 B CN 103220838B CN 201310143695 A CN201310143695 A CN 201310143695A CN 103220838 B CN103220838 B CN 103220838B
- Authority
- CN
- China
- Prior art keywords
- power switch
- switch pipe
- resistance
- transformer
- circuit
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
Links
- 238000001914 filtration Methods 0.000 claims abstract description 21
- 239000003990 capacitor Substances 0.000 claims description 7
- 230000001681 protective effect Effects 0.000 claims description 4
- 239000003381 stabilizer Substances 0.000 claims description 4
- 230000002459 sustained effect Effects 0.000 claims description 4
- 230000010355 oscillation Effects 0.000 abstract description 3
- 238000000034 method Methods 0.000 description 5
- 238000010586 diagram Methods 0.000 description 2
- 238000004020 luminiscence type Methods 0.000 description 2
- 230000002596 correlated effect Effects 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000005669 field effect Effects 0.000 description 1
- 238000005286 illumination Methods 0.000 description 1
- 239000000463 material Substances 0.000 description 1
- 230000000087 stabilizing effect Effects 0.000 description 1
Landscapes
- Rectifiers (AREA)
Abstract
The invention discloses a kind of LED ballast driven circuit, comprising: for providing the rectification filtering module of direct voltage for load, transformer, power switch pipe Q1 and power switch pipe Q2; One end of output connection transformer primary coil after overload of rectification filtering module, the primary coil other end is successively through power switch pipe Q2 and resistance R5 ground connection; Secondary coil one end ground connection, the other end is successively through diode D7 and the electric capacity C5 ground connection of reversal connection.The present invention adopts transformer to be combined with power switch pipe, form self-excited oscillation circuit, primary transformer coil and power switch pipe Q2 are all as the part in load supplying loop, secondary transformer and electric capacity C2, resistance R2 form positive feedback oscillating circuit, ensure the normal operation of circuit, power switch pipe Q1 is monitored the current/voltage of current supply circuit by resistance R5, realizes the current limliting to drive circuit and pressure limiting, ensure the normal work of circuit, prevent load from being damaged.
Description
Technical field
The present invention relates to LED Driving technique field, be specifically related to a kind of LED ballast driven circuit.
Background technology
Non-isolated high efficiency LED illumination before or the driving power of indicating device, all adopt application-specific integrated circuit (ASIC) (IC) to control the circuit framework of high withstand voltage field effect transistor (MOS); Material cost is very high, has raised the price of Related product to a certain extent, hinders LED and to be correlated with popularizing of energy-conserving product.
Summary of the invention
The invention provides a kind of LED ballast driven circuit, do not adopt application-specific integrated circuit (ASIC), stable output, to solve the problem can be realized.
The invention provides a kind of LED ballast driven circuit, comprising: for providing the rectification filtering module of direct voltage for load, transformer T, power switch pipe Q1 and power switch pipe Q2; One end of output VD+ primary coil of connection transformer T after overload of rectification filtering module, the primary coil other end is successively through the collector electrode of power switch pipe, emitter and resistance R5 ground connection; Secondary coil one end ground connection of transformer T, the secondary coil other end is successively through diode D7 and the electric capacity C5 ground connection of reversal connection; The described other end of primary coil is also connected to the described other end of secondary coil successively through starting resistance R3, electric capacity C2 and resistance R2, the base stage of power switch pipe Q2 is connected on the link node of starting resistance R3 and electric capacity C2, the base stage of power switch pipe Q2 is also successively through collector electrode and the grounded emitter of power switch pipe Q1, the base stage of power switch pipe Q1 is connected to the emitter of power switch pipe Q2 through resistance R4, the base stage of power switch Q1 is also through electric capacity C3 ground connection.
Preferably, the base stage of power switch pipe Q2 is also successively through a voltage-stabiliser tube D5 and electric capacity C5 ground connection.
Preferably, the base stage of power switch pipe Q1 is connected to the described other end of transformer T secondary coil through a resistance R7.
Preferably, the series arm that is made up of resistance R8 and thermistor RT1 of the two ends parallel connection one of described resistance R5.
Preferably, the output VD+ of rectification filtering module and described one end of transformer T primary coil are parallel with discharge resistance R6 and filter capacitor C4.
Preferably, the described other end of transformer T primary coil is connected to the output VD+ of rectification filtering module through a sustained diode 6.
Preferably, described rectification filtering module comprises rectifier bridge and is attempted by the filter capacitor C1 of rectification bridge output end.
Preferably, one of them input of the ac input end of rectifier bridge is serially connected with protective tube F1, another output is serially connected with current-limiting resistance R1, a two ends core inductance in parallel of current-limiting resistance R1.
Preferably, the resistance of described starting resistance R3 is greater than 1M Ω, and the multiplication factor of described power switch pipe Q2 is 15 ~ 60.
Technique scheme can be found out, because the embodiment of the present invention adopts transformer to be combined with power switch pipe, form self-excited oscillation circuit, primary transformer coil and power switch pipe Q2 are all as the part in load supplying loop, secondary transformer and electric capacity C2, resistance R2 form positive feedback oscillating circuit, ensure the normal operation of circuit, power switch pipe Q1 is monitored the current/voltage of current supply circuit by resistance R5, realize the current limliting to drive circuit and pressure limiting, ensure the normal work of circuit, prevent load from being damaged.
Accompanying drawing explanation
In order to be illustrated more clearly in the embodiment of the present invention or technical scheme of the prior art, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.
Fig. 1 is the circuit theory diagrams of the LED ballast driven circuit in the embodiment of the present invention.
Embodiment
Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is only the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making other embodiments all obtained under creative work prerequisite, belong to the scope of protection of the invention.
Embodiment:
The embodiment of the present invention provides a kind of LED ballast driven circuit, as shown in Figure 1, comprise: for for load, (in the embodiment of the present invention, load is connected to drive circuit output OUT+, the OUT-in circuit diagram, concrete load is not drawn in figure) rectification filtering module of direct voltage is provided, transformer T, power switch pipe Q1 and power switch pipe Q2, the output VD+(of rectification filtering module is OUT+ end) one end 6 of the primary coil of connection transformer T after overload, the primary coil other end 10 is successively through the collector electrode of power switch pipe Q2, emitter and resistance R5 ground connection, be appreciated that, current supply circuit for whole drive circuit is: alternating current enters rectification filtering module through the ac input end AC/N of rectification filtering module, obtain direct voltage and be supplied to load, then by transformer T primary coil, the collector electrode of power switch pipe Q2, emitter and resistance R5, power supply ground is finally got back to, secondary coil one end 2 ground connection of transformer T, the transformer T secondary coil other end 5 connects the secondary coil other end 5 through the diode D7(of reversal connection and the negative electrode of diode D7 successively, the anode of diode D7 connects electric capacity C5) and electric capacity C5 ground connection, the described other end 10 of transformer T primary coil is also successively through starting resistance R3, electric capacity C2 and resistance R2 is connected to the described other end 5 of transformer T secondary coil, the base stage of power switch pipe Q2 is connected on the link node of starting resistance R3 and electric capacity C2, the base stage of power switch pipe Q2 is also successively through collector electrode and the grounded emitter of power switch pipe Q1, the base stage of power switch pipe Q1 is connected to the emitter of power switch pipe Q2 through resistance R4, the base stage of power switch Q1 is also through electric capacity C3 ground connection.
It (is full bridge rectifier in figure that rectification filtering module described in the embodiment of the present invention comprises rectifier bridge, be made up of rectifier diode D1, rectifier diode D2, rectifier diode D3, rectifier diode D3) and be attempted by the filter capacitor C1 of rectification bridge output end, certainly, do not get rid of in other embodiments and can adopt Half bridge rectifier circuit or diode rectifier circuit.In order to strengthen the safety and reliability of drive circuit in the embodiment of the present invention, one of them input AC/L of the ac input end of rectifier bridge is serially connected with protective tube F1, another output terminals A C/N is serially connected with current-limiting resistance R1, a two ends core inductance L1 in parallel of current-limiting resistance R1.
When powering on, civil power inputs from AC/L, AC/N input end, respectively via protective tube F1 and inductance L 1, resistance R1 enter into rectifier diode D1 ~ D4 form full bridge rectifier obtain and rough direct voltage or DC pulse voltage, then obtain comparatively level and smooth direct voltage or pulse voltage at VD+ end further after electric capacity C1 after filtering, this direct voltage just will can be used for driving LED luminescence component (load) after step-down and current limliting process.
During startup, the direct voltage of VD+ end is after overload (load is connected between OUT+ and OUT-), export transformer T primary coil to, then get back to power supply ground through starting resistance R3, electric capacity C2, resistance R2 and transformer T secondary coil, this process, electric capacity C2 can be charged, when the voltage on electric capacity C2 reaches the bias voltage threshold values of power switch pipe Q2 base stage, power switch pipe Q2 is switched on, and whole current supply circuit is switched on, and drive circuit starts to enter into operating state.
After ensureing that drive circuit enters operating state further, power switch pipe Q2 can steady operation, the base stage of power switch pipe Q2 is also successively through a voltage-stabiliser tube D5 and electric capacity C5 ground connection, namely between power switch pipe Q2 base stage and electric capacity C5, a voltage-stabiliser tube is increased, clamper is carried out to the base voltage of power switch pipe Q2, make power switch pipe Q2 can steady operation, the pulse voltage produced by the coupling of transformer T secondary coil produces through diode D7 the control negative voltage that is proportional to voltage (being simultaneously proportional to the output voltage of drive circuit) on transformer T primary coil on electric capacity C5, it is by voltage stabilizing didoe D5, limit the voltage be added in power tube switching tube Q2 base stage.
When the voltage in current supply circuit raises or load current rises, the voltage of whole current supply circuit or the change of electric current can be detected by resistance R5, therefore resistance R5 is herein for examining the double action of leakage resistance and current-limiting resistance.On resistance R5, electric current rises, and the voltage of resistance R5 also rises thereupon, if whole current supply circuit voltage rise, dividing potential drop then on resistance R5 also rises thereupon, when the voltage rise on resistance R5 is to certain level, by the conducting of resistance R4 direct trigger power switching tube Q1, after power switch pipe Q1 conducting, voltage in power switch pipe Q2 base stage is forced to drag down, therefore the switching channels (between collector electrode and emitter) of power switch pipe Q2 is subject to conducting restriction, thus realize limiting the voltage in whole drive circuitry loop, ensure the stable output of drive circuit.
In order to ensure the restriction to output current further, the base stage of power switch pipe Q1 is connected to the described other end 5 of transformer T secondary coil through a resistance R7.Current supply circuit electric current is by the collector and emitter of power switch pipe Q2, the voltage drop that arrival resistance R5 produces is applied to the base stage of power switch pipe Q1 via resistance R4, the voltage being applied to power switch pipe Q1 base stage through resistance R4 superposes with the bias voltage that transformer T secondary coil produces through resistance R7, when can reach the conducting voltage of power switch pipe Q1 after two voltage superposition, power switch pipe Q1 conducting, pull off the driving voltage in power switch pipe Q2 base stage, thus limit the peak current of current supply circuit.Because the output current of drive circuit and the peak current of current supply circuit have certain algebraic relation, the peak current of current supply circuit is restricted and means that output current is limited.
Current supply circuit electric current is limited by power switch pipe Q1, there is proportional relationship in the pulse voltage of transformer T secondary coil and the input and output voltage of drive circuit, the resistance R7 being connected to the described other end 5 of transformer T secondary coil produces the bias current being proportional to drive circuit input voltage (because the voltage proportional on transformer T primary coil is in the input voltage of drive circuit), the voltage drop of this bias current on resistance R4 and resistance R5 also can be proportional to input voltage, and the conducting voltage of power switch pipe Q1 is a definite value after deduction temperature factor; The bias current that resistance R7 produces can produce power switch pipe Q1 conducting with input voltage increase, the effect of further power limitation switching tube Q2 base voltage, thus the voltage drop that current supply circuit electric current will be made to produce on resistance R5 reduces; Therefore by the bias current value that adjusting resistance R7 produces, can go to compensate and suppress drive circuit output current with the change of input voltage, thus make drive circuit output current be limited in one numerically stable.
Because temperature can affect the conducting voltage of power switch pipe Q1, therefore, the series arm that is made up of resistance R8 and thermistor RT1 of the two ends parallel connection one of the R5 of resistance described in the embodiment of the present invention.The temperature characterisitic that resistance R8 series thermal-sensitive resistance RT1 is formed, just in time compensate and counteract the impact of variations in temperature on power switch pipe Q1 conducting voltage, thus inhibit variations in temperature on the impact of drive circuit output current, drive circuit output current will become a steady state value, like this, both met the driving demand needed for LED luminescence component (load), and achieved again minimum element cost, the drive circuit that the embodiment of the present invention is provided has possessed high cost performance.
In order to ensure normal startup and the steady operation of drive circuit further, in the embodiment of the present invention, the output VD+ of rectification filtering module and described one end of transformer T primary coil are parallel with discharge resistance R6 and filter capacitor C4.During startup, the voltage of the output VD+ of rectification filtering module also can be applied to the primary coil of transformer T by discharge resistance R6 and filter capacitor C4, thus charges to electric capacity C2 through starting resistance R3, completes quick stable startup.
The described other end 10 of transformer T primary coil is connected to the output VD+ of rectification filtering module through a sustained diode 6, sustained diode 6 provides discharge loop for transformer T primary coil and discharge resistance R6.
The resistance of the R3 of starting resistance described in the embodiment of the present invention is greater than 1M Ω, and the multiplication factor of described power switch pipe Q2 is 15 ~ 60, and in the embodiment of the present invention, the multiplication factor of power switch pipe Q2 selects 40, has good switch efficiency.In the embodiment of the present invention, the value of starting resistance R3 is the resistance of more than mega-ohms; when output is shorted; drive circuit will stop oscillation; the electric current of current supply circuit just only has power switch pipe Q2 to be exaggerated the electric current that starting resistance R3 produces; power switch pipe Q2 in the embodiment of the present invention uses the triode of low multiplication factor; the electric current that extremely low bias current coordinates the power switch pipe of low multiplication factor to produce is completely in the scope that drive circuit can bear; any component wear can not be caused, thus reach the object of drive circuit output short circuit protection.
Above a kind of LED ballast driven circuit that the embodiment of the present invention provides is described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1.LED ballast driven circuit, is characterized in that, comprising: for providing the rectification filtering module of direct voltage for load, transformer T, power switch pipe Q1 and power switch pipe Q2; One end of output VD+ primary coil of connection transformer T after overload of rectification filtering module, the primary coil other end is successively through the collector electrode of power switch pipe Q2, emitter and resistance R5 ground connection; Secondary coil one end ground connection of transformer T, the secondary coil other end is successively through diode D7 and the electric capacity C5 ground connection of reversal connection; The described other end of primary coil is also connected to the described other end of secondary coil successively through starting resistance R3, electric capacity C2 and resistance R2, the base stage of power switch pipe Q2 is connected on the link node of starting resistance R3 and electric capacity C2, the base stage of power switch pipe Q2 is also successively through collector electrode and the grounded emitter of power switch pipe Q1, the base stage of power switch pipe Q1 is connected to the emitter of power switch pipe Q2 through resistance R4, the base stage of power switch Q1 is also through electric capacity C3 ground connection; The base stage of power switch pipe Q2 is also successively through a voltage-stabiliser tube D5 and electric capacity C5 ground connection.
2. LED ballast driven circuit as claimed in claim 1, is characterized in that: the base stage of power switch pipe Q1 is connected to the described other end of transformer T secondary coil through a resistance R7.
3. LED ballast driven circuit as claimed in claim 2, is characterized in that: the series arm that the two ends parallel connection one of described resistance R5 is made up of resistance R8 and thermistor RT1.
4. LED ballast driven circuit as claimed in claim 3, is characterized in that: the output VD+ of rectification filtering module and described one end of transformer T primary coil are parallel with discharge resistance R6 and filter capacitor C4.
5. LED ballast driven circuit as claimed in claim 4, is characterized in that: the described other end of transformer T primary coil is connected to the output VD+ of rectification filtering module through a sustained diode 6.
6. LED ballast driven circuit as claimed in claim 1, is characterized in that: described rectification filtering module comprises rectifier bridge and is attempted by the filter capacitor C1 of rectification bridge output end.
7. LED ballast driven circuit as claimed in claim 6, it is characterized in that: on one of them input of the ac input end of rectifier bridge, be serially connected with protective tube F1, another output is serially connected with current-limiting resistance R1, a two ends core inductance in parallel of current-limiting resistance R1.
8. LED ballast driven circuit as claimed in claim 1, it is characterized in that: the resistance of described starting resistance R3 is greater than 1M Ω, the multiplication factor of described power switch pipe Q2 is 15 ~ 60.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310143695.4A CN103220838B (en) | 2013-04-23 | 2013-04-23 | LED ballast driven circuit |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201310143695.4A CN103220838B (en) | 2013-04-23 | 2013-04-23 | LED ballast driven circuit |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN103220838A CN103220838A (en) | 2013-07-24 |
| CN103220838B true CN103220838B (en) | 2016-03-02 |
Family
ID=48818130
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201310143695.4A Expired - Fee Related CN103220838B (en) | 2013-04-23 | 2013-04-23 | LED ballast driven circuit |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN103220838B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN104540294B (en) * | 2015-01-06 | 2018-11-27 | 横店集团得邦照明股份有限公司 | A kind of auto-excitation type LED conversion equipment that realizing non-pole light regulating and control method |
| CN110351919A (en) * | 2018-04-04 | 2019-10-18 | 通用电气照明解决方案有限公司 | Driver and LED information display system for LED |
Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5453668A (en) * | 1994-03-23 | 1995-09-26 | Chow; Shing C. | Method and circuitry for producing dynamic illumination of discharge lamp |
| CN101476693A (en) * | 2009-01-20 | 2009-07-08 | 汉得利（常州）电子有限公司 | Caution flasher |
| CN201571238U (en) * | 2009-12-28 | 2010-09-01 | 重庆三弓科技发展有限公司 | LED constant current switch power circuit |
| CN102752909A (en) * | 2011-04-19 | 2012-10-24 | 松下电器产业株式会社 | Power Supply |
| CN202679728U (en) * | 2012-06-12 | 2013-01-16 | 伍涌 | Non-isolated critical self-excited type LED driving power supply |
| CN102970797A (en) * | 2012-11-15 | 2013-03-13 | 深圳和而泰照明科技有限公司 | Secondary output current limiting circuit and device |
| CN102984859A (en) * | 2012-11-16 | 2013-03-20 | 深圳和而泰照明科技有限公司 | Light-emitting diode (LED) driving circuit and light-emitting diode (LED) driving device |
| CN203301800U (en) * | 2013-04-23 | 2013-11-20 | 广州市隆都电子有限公司 | LED ballast drive circuit |
-
2013
- 2013-04-23 CN CN201310143695.4A patent/CN103220838B/en not_active Expired - Fee Related
Patent Citations (8)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US5453668A (en) * | 1994-03-23 | 1995-09-26 | Chow; Shing C. | Method and circuitry for producing dynamic illumination of discharge lamp |
| CN101476693A (en) * | 2009-01-20 | 2009-07-08 | 汉得利（常州）电子有限公司 | Caution flasher |
| CN201571238U (en) * | 2009-12-28 | 2010-09-01 | 重庆三弓科技发展有限公司 | LED constant current switch power circuit |
| CN102752909A (en) * | 2011-04-19 | 2012-10-24 | 松下电器产业株式会社 | Power Supply |
| CN202679728U (en) * | 2012-06-12 | 2013-01-16 | 伍涌 | Non-isolated critical self-excited type LED driving power supply |
| CN102970797A (en) * | 2012-11-15 | 2013-03-13 | 深圳和而泰照明科技有限公司 | Secondary output current limiting circuit and device |
| CN102984859A (en) * | 2012-11-16 | 2013-03-20 | 深圳和而泰照明科技有限公司 | Light-emitting diode (LED) driving circuit and light-emitting diode (LED) driving device |
| CN203301800U (en) * | 2013-04-23 | 2013-11-20 | 广州市隆都电子有限公司 | LED ballast drive circuit |
Also Published As
| Publication number | Publication date |
|---|---|
| CN103220838A (en) | 2013-07-24 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN102332835B (en) | Discharge circuit of power supply circuit and active control circuit of discharge circuit | |
| CN102044971B (en) | Self-excited switching power supply circuit | |
| CN104994664A (en) | Single-level step-down LED driving circuit of leakage energy feedback | |
| CN104302053A (en) | LED constant current source output detection control circuit and control method thereof | |
| CN103152928A (en) | Load overvoltage protection circuit and control method thereof | |
| CN101877535B (en) | Bipolar transistor self-exciting Buck-Boost converter | |
| CN204068745U (en) | A kind of transformer leakage inductance Energy harvesting type flyback sourse system | |
| JP2015053225A (en) | Led drive circuit | |
| CN107277962A (en) | Current control circuit | |
| CN201766754U (en) | Non-isolated type LED driving power supply having protection function | |
| CN103220838B (en) | LED ballast driven circuit | |
| CN104953819A (en) | Switching circuit for controlling the power supply of a load | |
| CN203301800U (en) | LED ballast drive circuit | |
| CN103762839B (en) | A kind of magnetic coupling type single-phase high-gain Bridgeless power factor circuit correcting circuit | |
| CN104057181A (en) | Open-phase protection circuit for inverter welding machine | |
| CN102843047B (en) | Transformer with microprocessor to control series-parallel connection conversion of a capacitor | |
| CN103117645A (en) | Buck converter with inductor-diode (LD) network | |
| CN103298204A (en) | Silicon controlled dimming LED lamp driver with open circuit protection function | |
| CN203289700U (en) | Novel drive power supply with light-emitting diode | |
| CN203590041U (en) | Flyback step-up protection circuit | |
| TWI502868B (en) | Self-oscillating and single stage high power factor driver circuit | |
| CN105429120A (en) | Surge current suppression circuit | |
| CN203674968U (en) | Control circuit, RCC circuit and illumination device | |
| CN105576961A (en) | Full wave rectifier circuit and voltage converter | |
| CN103151942B (en) | A kind of LED no electrolytic capacitor constant-current supply |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| ASS | Succession or assignment of patent right |
Owner name: CHEN JINGZHAN Free format text: FORMER OWNER: GUANGZHOU LONGDU ELECTRONICS CO., LTD. Effective date: 20150626 |
|
| C41 | Transfer of patent application or patent right or utility model | ||
| TA01 | Transfer of patent application right |
Effective date of registration: 20150626 Address after: 510240 Guangdong Province, Haizhuqu District, Jiangnan Avenue, No. 100 in the middle of the building, room No. 1610, building No. Applicant after: Chen Jingzhan Address before: On the north side of the Yangtze River Road Panyu District Shilou town Chigang village of Guangzhou city of Guangdong Province in 511447 Applicant before: Guangzhou Longdo Electronics Co., Ltd. |
|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CB03 | Change of inventor or designer information |
Inventor after: Xu Yunxia Inventor before: Zheng Qinxian |
|
| CB03 | Change of inventor or designer information | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20170426 Address after: Baiyun District of Guangzhou City, Guangdong province 510540 and the first industrial zone five road Patentee after: GUANGZHO GRACION LIGHTING CO., LTD. Address before: 510240 Guangdong Province, Haizhuqu District, Jiangnan Avenue, No. 100 in the middle of the building, room No. 1610, building No. Patentee before: Chen Jingzhan |
|
| TR01 | Transfer of patent right | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20160302 Termination date: 20180423 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |